| The Old Aristocrat Sat on his chair at home........
As the answer hasn’t been supplied as yet by any of us oldies I thought I’d put the “young uns” out of their misery.
It’s a mnemonic (silent “m”) used in trigonometry for:
Tangent = opposite / adjacent
Sine = opposite / hypotenuse
Cosine = adjacent / hypotenuse
The one I used at school was TOA CAH SOH pronounced, “tow a car so”.
When I started work and had to remember things like the resistor colour codes the mnemonics were a little less politically correct!
Of course in these days of computers such things have been largely consigned to history; anyone remember spending hours working with log tables? |